Safety lock-hinge



{No Model.)

I. KRUPP. SAFETY LOCK HINGE.

Patented July 30, 1895.

&

PATENT. Fries.

FRANK KRUPP, OF NEW ORLEANS, LOUISIANA.

SAFETY LOCK-HING E.

SEECIFICATION forming part of Letters Patent No. 543,533, dated July 30, 1895.

Application filed December 12, 1892. Renewed May 13, 1895. Serial No. 549,193. (No model.)

To all whom it may concern.-

Be it known that I, FRANK KRUPP, a citizen of the United States, residing at New Orleans, in the parish of Orleans and State of Louisiana, have invented certain new and useful Improvements in Safety Lock-Hinges; andI do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in a hinge, and its novelty will be fully understood from the following description and claim, when taken in connection with the annexed drawings.

The objects of my invention are to provide a secure fastening for a door which will prevent the door from being opened when the hinge is locked. I attain these objects by the mechanism illustrated in the accompanying drawings, in which- Figure 1 is a top viewiof hinge when locked. Fig. 2 is a top view of hinge when unlocked. Fig. 3 is an inside view showing hinge unlocked and door open. Fig. 4 is an outside view showing hinge unlocked and door open. Fig. 5 is an outside view of hinge closed and unlocked. Fig. 6 is an outside view of hinge I closed and locked.

attached loosely on its lower end to a hanger H, and the top of the key is provided, as shown in Fig.5, with a projecting piece on end of same, which enables the key to be raised or lowered in or out of position.

In practice the hinges are attached to a door in the ordinary manner, and at night the door is locked by the usual means. At the same time the key G is placed in the slot of hinge, as shown in Fig. 6, and the hinge is locked. Should a burglar attempt to enter a room through the door, he would find that he would be unable to do so, even should he unlock the look, as the hinges would not yield, nor could the door he opened until key G was removed from its position, as shown in Fig. 6. When it is not desired to lock the hinge, the key G is released, and hangs in the position shown in Fig. 5, and the door can be opened or closed in the usual manner.

A striking advantage of my invention isits economical construction, and the ease with which the same may be put into practical use.

I am aware that it is not new with myself to provide a lock-hinge with a key for looking the two parts thereof together, as well as the fact that it is not broadly new to provide means upon a lock-hinge in which to slide saidkey, and I therefore lay no claim to either of such ideas; but,

What I do claim, and desire to secure by I Letters Patent, is

In a lock hinge, the hinge portions 0, and B, having an opening between them, the lug E, formed upon the portion B, and the hanger H, secured to the portion 0 onthe same vertical plane with the said lug, combined with the key G loosely connected with the said hanger and the said lug, so as to be swung from one position to another, substantially as shown and described.

In testimony whereof I affix my signature in presence of two witnesses.

FRANK KRUPP. Witnesses:

J. L. MUELLER, RICARDO DEE. 

